A Zaremba-type criterion for hypoelliptic degenerate Ornstein–Uhlenbeck operators
Alessia Elisabetta Kogoj · Discrete and Continuous Dynamical Systems - S · 2019
We prove a cone-type criterion for a boundary point to be regular for the Dirichlet problem related to (possibly) degenerate Ornstein–Uhlenbeck operators in $ \mathbb{R}^N $. Our result extends the classical Zaremba cone criterion for the Laplace operator.